nsIPrintSession
Stores data pertaining only to a single print job. This
differs from nsIPrintSettings, which stores data which may
be valid across a number of jobs.
This interface is currently empty since, at this point, only
platform-specific derived interfaces offer any functionality.
It is here as a placeholder for when the printing session has
XP functionality.
The creation of a component which implements this interface
will begin the session. Likewise, destruction of that object
will end the session.
@status